Type
Age
Age range
303.7–298.9 Ma
Permian
Cisuralian
Asselian
Carboniferous
Pennsylvanian
Gzhelian
Kasimovian
303.8303.6303.4303.2303.0302.8302.6302.4302.2302.0301.8301.6301.4301.2301.0300.8300.6300.4300.2300.0299.8299.6299.4299.2299.0298.8